<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <form>
        <input type="text">
        <input type="submit"
     </form>
       <br>
     <form>
            first name <input type="text" name="first name"> 
            <br>
            last name <input type="text" name="last name">

            password<input type="password" name="password">
        </form>
         
        <form>
            <input type="radio" name="sex" value="1">男
            <input type="radio" name="sex" value="2">女
        </form>
     
</body>

</html>